Seiko Cal. 6231 - 215

This Spring Drive model from 1971 features a 35mm PVD Black case. It features a White dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-99f7e8d4ec4c]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1971

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